Our company grows for many years single crystals KGW and produces active laser elements from them. To expand the range of manufactured laser elements, we have mastered the technology of growing KTP and BBO single crystals. Currently, prototypes of these crystals has been grown.
To evaluate the quality of grown KTP crystals, nonlinear elements of several standard sizes were made. When testing such elements, a conversion coefficient of more than 45% is obtained for the following conditions:

— The wavelength of the converted radiation is 1,064 microns.
— The pulse energy is 150 mJ.
— The pulse duration is 10 nsec.
— The length of the element is 7 mm.